Are you playing Pokemon Go? I hope you’re having lots of fun trying to catch ‘em all! If you don’t want to just wander aimlessly around your neighborhood though, check out PokeVision, the map that lets you know where the Pokemon are spawning.
This map populates where the Pokemon are spawning in your area so you can go where the good catches are. There are little times below the spawns to let you know how long you have to get there before the one you’re after disappears forever (not actually forever, there’s no rush, it will come back).
The real downside to this tool is that it’s based on the servers for the game and their servers have not been so stable but hopefully as they work out the kinks, this map tool will get better and more realiable. You can only scan once every 30 seconds and the rare Pokemon won’t be on the map as long. So get out there and get hunting!